Larcan FM-250, Technical Manual

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FM-250 FM BROADCASTING EXCITER
Issue Date: 21 Jan 2003
GENERAL DESCRIPTION
1. STRUCTURE.
The Exciter comprises of the following modules.
a) Synthesizer/Modulator module (980507).
b) Control/Monitoring module (980508).
c) 250W RF PA module (980510).
d) 250W Power supply module (980515).
e) Display module (980509).
f) Stereo coder/Limiter (980512). (Optional).
g) Fan Psu module (980518).
2. FEATURES.
The FM-250 Exciter has standard features including the following;
a) Remote/Internal frequency selection (standard) with Thumbwheel switch option
available.
b) Remote telemetry with voltage free contacts (standard).
c) +48V Battery operation (standard).
d) Wideband input (MPX) with two auxiliary inputs (SST/SCA/RDS).
e) Comprehensive metering including VU meters. (Built in Stereo decoder).
f) ALC built in for absolute control of RF output power.
g) Comprehensive protection built in.
3. BLOCK DIAGRAM DESCRIPTION.